JP2015225301A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device such that it is possible to prevent occurence of uneven brightness of a display image displayed on a display unit.SOLUTION: A television device 100 includes: a liquid crystal cell 11; a light source unit 16; a light guide plate 15 that includes a light incident surface 15c constituted of a lateral end surface on which light from the light source unit 16 is incident and guides the light incident on the light incident surface 15c from the light source unit 16 to the liquid crystal cell 11; a mold frame 13 that is placed between the light guide plate 15 and the liquid crystal cell 11 and supports the liquid crystal cell 11. The television device 100 includes an elastic member 4 that is placed between the light guide plate 15 and the mold frame 13, is in direct contact with the light guide plate 15 in elastic deformation state, and has non light transmissivity of preventing transmission of light.

Description

  The present invention relates to a display device, and more particularly to a display device including a member disposed between a light guide plate and a display unit support member.

  Conventionally, a display device including a member disposed between a light guide plate and a display unit support member is known (see, for example, Patent Document 1).

  Patent Document 1 includes a liquid crystal display panel, a mold for supporting the liquid crystal display panel (display unit supporting member), a backlight device disposed on the opposite side of the mold from the liquid crystal display panel, and an optical compensation film. A liquid crystal display device comprising the same is disclosed. The backlight device includes a light guide plate and a cold cathode fluorescent tube installed on a side end surface of the light guide plate. The optical compensation film is disposed on the surface of the light guide plate on the liquid crystal display panel side and between the light guide plate and the mold. Further, a rubber cushion is disposed between the optical compensation film (light guide plate) and the mold. The rubber cushion is disposed so as to be in close contact with the optical compensation film and the mold without being compressed and deformed.

JP 2005-91971 A

  However, in the liquid crystal display device of Patent Document 1, since the rubber cushion is disposed so as to be in close contact with the optical compensation film and the mold without being compressed and deformed, when the mold is warped, the mold and the optical compensation film ( A gap is formed between the light guide plate and the light guide plate. Then, the light from the cold cathode fluorescent tube leaks to the liquid crystal display panel side through the gap, and in the liquid crystal display panel, the vicinity of the cold cathode fluorescent tube becomes brighter, but at a position away from the cold cathode fluorescent tube. It will be dark. For this reason, there is a problem that unevenness (brightness unevenness) occurs in the brightness of the display image displayed on the liquid crystal display panel.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to suppress the occurrence of unevenness (brightness unevenness) in the brightness of the display image displayed on the display unit. It is an object of the present invention to provide a display device that can be used.

  In order to achieve the above object, a display device according to one aspect of the present invention includes a display unit, a light source unit, and a light incident surface including a side end surface on which light is incident from the light source unit. A light guide plate that guides light incident on the incident surface to the display unit; a display unit support member that is disposed between the light guide plate and the display unit and supports the display unit; and the light guide plate and the display unit support member. And an elastic member having a non-light-transmitting property that is disposed between and is in contact with the light guide plate in an elastically deformed state and suppresses light transmission.

  In the display device according to one aspect of the present invention, as described above, the light-transmitting plate is in contact with the light guide plate in an elastically deformed state between the light guide plate and the display unit supporting member and suppresses light transmission. An elastic member is provided. As a result, even when the elastic member between the light guide plate and the display unit support member is in contact with the light guide plate in an elastically deformed state, even if the display unit support member is warped, the light guide plate Since the elastic member can be deformed by following the change in the distance between the display portion support member and the display unit support member, it is possible to suppress the generation of a gap between the light guide plate and the elastic member. As a result, it is possible to suppress the light from the light source unit from passing through the gap between the light guide plate and the elastic member as it is and entering the display unit. It is possible to suppress the darkening at a position away from. As a result, it is possible to suppress the occurrence of unevenness (brightness unevenness) in the brightness of the display image displayed on the display unit.

  The display device according to the above aspect preferably further includes an optical sheet disposed on the side opposite to the light source part of the elastic member, and the outer side of the elastic member on the side of the light source part side of the optical sheet. At least a portion is in contact with the light guide plate. If comprised in this way, the light of a light source part will pass through the clearance gap between a light guide plate and an elastic member as it is by the elastic member contact | abutted with a light guide plate in the outer side rather than the side end surface by the side of the light source part of an optical sheet. It can suppress that it injects into the side end surface by the side of the light source. Thereby, due to the light incident on the side end surface of the optical sheet on the light source unit side, in the display unit, while the vicinity of the light source unit becomes bright, it is possible to suppress darkening at a position away from the light source unit. Therefore, unevenness in the brightness of the display image displayed on the display unit can be suppressed.

  In the display device according to the one aspect, preferably, the light source unit includes a plurality of light emitting elements arranged so as to be aligned along a direction in which a side end surface of the light guide plate extends, and the elastic member is provided on a side of the light guide plate. It arrange | positions so that it may extend along the direction where an end surface is extended. If comprised in this way, it can suppress that a nonuniformity arises in the brightness of the display image displayed on a display part in the wide range of the direction where the side end surface of a light-guide plate is extended by an elastic member. Further, since the elastic member suppresses the generation of a gap between the light guide plate and the elastic member, the light of each light emitting element that is a point light source passes through the gap between the light guide plate and the elastic member as it is. It can suppress entering into a display part. This suppresses the occurrence of a phenomenon (so-called hot spot) in which the region facing the light emitting element becomes dark on the light source unit side of the display unit while the region facing the light emitting element becomes extremely bright. Therefore, it is possible to effectively suppress unevenness in the brightness of the display image displayed on the display unit. As a result, since it is not necessary to provide many light emitting elements and reduce the interval between the light emitting elements in order to suppress the occurrence of hot spots, an increase in the number of light emitting elements can be suppressed. In addition, the distance from the light emitting element to the opening of the display unit supporting member can be reduced while suppressing the occurrence of hot spots without increasing the number of light emitting elements, so that the display device can be reduced in size accordingly. Can be

  In the display device according to the above aspect, the elastic member is preferably made of a non-translucent foam material. If comprised in this way, since the foam material containing air is easy to be elastically deformed and is flexible, it is possible to easily elastically deform the non-light-transmitting elastic member so as to be in close contact with the light guide plate. it can. Thereby, it can suppress effectively that a clearance gap arises between a light-guide plate and an elastic member.

  The display device according to the above aspect preferably further includes a light guide plate support member that is disposed on the opposite side of the light guide plate from the elastic member and is less elastically deformed than the elastic member. With this configuration, when the elastic member is elastically deformed by pressing the elastic member against the light guide plate toward the light guide plate support member, the light guide plate support member is more elastically deformed than the elastic member. Can be suppressed. Accordingly, the elastic member can be brought into contact with the light guide plate in a state where the elastic member is sufficiently elastically deformed.

  In this case, preferably, the light guide plate support member is configured not to be elastically deformed substantially. If comprised in this way, it can be made to contact | abut to a light-guide plate in the state which elastically deformed the elastic member enough, without substantially elastically deforming a light-guide plate support member.

  In the display device according to the above aspect, the display unit support member preferably includes a recess in which the elastic member is disposed. If comprised in this way, while positioning the elastic member with respect to a display part support member can be performed easily by a recessed part, the position shift of the elastic member with respect to a display part support member can also be suppressed.

  In the configuration further including the optical sheet, preferably, the elastic member is arranged so as to press down the side end surface of the optical sheet on the light source unit side and the vicinity thereof. If comprised in this way, since the position of an optical sheet can be suppressed by the elastic member which suppresses the side end surface by the side of the light source part of an optical sheet, and its vicinity, the position of an optical sheet shifts by vibration etc. It is possible to suppress the light guide plate from being damaged due to this.

  According to the present invention, it is possible to suppress the occurrence of unevenness in the brightness of the display image displayed on the display unit as described above.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is the perspective view which showed the whole structure of the television apparatus by 1st Embodiment of this invention. It is the disassembled perspective view which showed the structure of the display module of the television apparatus by 1st Embodiment of this invention. It is sectional drawing which showed the structure of the display module of the television apparatus by 1st Embodiment of this invention. It is sectional drawing which showed the display module by 2nd Embodiment of this invention. It is the disassembled perspective view which showed the spacer member and rear frame by 3rd Embodiment of this invention. It is the side view which showed the spacer member by 3rd Embodiment of this invention. It is sectional drawing which showed the display module by 3rd Embodiment of this invention. It is sectional drawing which showed the display module by the modification of 1st Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
With reference to FIGS. 1-3, the structure of the television apparatus 100 by 1st Embodiment of this invention is demonstrated. In the following description, the side on which an image is displayed with respect to the television device 100 will be referred to as the front (Y1 direction), and the opposite side of the front will be referred to as the rear (Y2 direction). Direction). The directions orthogonal to the front-rear direction are defined as the left-right direction (X direction) and the up-down direction (Z direction). The television device 100 is an example of the “display device” in the present invention.

  As shown in FIG. 1, the television device 100 according to the first embodiment of the present invention includes a display module 1, a front cabinet (front housing) 2 that covers the display module 1 from the front (Y1 direction), and the display module 1. And a rear cabinet (rear housing) 3 that covers from behind (Y2 direction). In addition, the television device 100 is formed in a rectangular shape that is long in the left-right direction (X direction) when viewed from the front.

  As shown in FIG. 2, the display module 1 includes a liquid crystal cell 11 having a display surface 11a on which a display image is displayed on the front side (Y1 side), a bezel 12 that holds the liquid crystal cell 11 from the front, and a liquid crystal cell. 11 and a mold frame 13 that holds 11 from behind. In addition, the display module 1 includes various optical sheets 14, a light guide plate 15, a light source unit 16, a reflection sheet 17, and a rear frame 18. The display module 1 includes an elastic member 4 and a spacer member 5. The liquid crystal cell 11 and the mold frame 13 are examples of the “display unit” and “display unit support member” of the present invention, respectively. The spacer member 5 is an example of the “light guide plate support member” in the present invention.

  The bezel 12 is a frame-like member, and is configured to be attached to the mold frame 13 with the liquid crystal cell 11 being sandwiched from the front (Y1 direction) of the mold frame 13.

  The mold frame 13 is a frame member made of resin. Further, as shown in FIG. 3, the front portion of the mold frame 13 includes an upper surface portion 13a on which an end portion of the liquid crystal cell 11 is disposed, and a wall portion 13b protruding to the front side (Y1 side) outside the upper surface portion. Is formed. The front end of the wall 13b is formed so as to contact the bezel 12. In addition, a concave portion 13 c that is slightly recessed forward is formed at the rear portion of the mold frame 13. The recess 13c is formed in a groove shape so as to extend in the vertical direction (Z direction). Further, the light passing through the optical sheet 14 is incident on the liquid crystal cell 11 from the opening 13 d of the frame-shaped mold frame 13.

  As shown in FIG. 2, the optical sheet 14 is a diffusion plate or other functional sheet, and is formed in a rectangular shape that is long in the left-right direction (X direction). Moreover, the optical sheet 14 is provided with two or more, and is laminated | stacked on the front-back direction (Y direction).

  The light guide plate 15 is a plate-shaped member made of resin, and is formed in a rectangular shape that is long in the left-right direction (X direction). In the light guide plate 15, the optical sheet 14 is laminated on the front surface 15a on the Y1 side, and the reflective sheet 17 is disposed on the rear surface 15b on the Y2 side.

  As shown in FIG. 3, the light source unit 16 is provided at a position facing the light incident surface 15 c formed by a side end surface on one side (X1 side) in the left-right direction (X direction) of the light guide plate 15. That is, the television device 100 (see FIG. 1) is a so-called edge light type (side light type) liquid crystal television device in which the light source unit 16 is disposed on the side end face side of the light guide plate 15. The light incident surface 15c of the light guide plate 15 is formed so as to extend in the vertical direction (Z direction).

  The light source unit 16 includes a substrate 16a extending along the vertical direction (Z direction) in which the light incident surface 15c extends, and a plurality of LEDs 16b (point light sources) mounted on the light incident surface 15c side (X2 side) of the substrate 16a. Including. The plurality of LEDs 16b are arranged at substantially equal intervals (interval D) in the vertical direction along the light incident surface 15c. The LED 16b is an example of the “light emitting element” in the present invention.

  As shown in FIG. 3, the reflection sheet 17 is configured to reflect the light from the light source unit 16 toward the light guide plate 15 side (front side, Y1 side). As a result, the light incident on the light incident surface 15c of the light guide plate 15 from each LED 16b, which is a point light source, is emitted as a surface light source from the front side of the optical sheet 14 by the optical sheet 14, the light guide plate 15, and the reflection sheet 17. It is configured to be.

  As shown in FIG. 2, the rear frame 18 is a metal plate-like member, and is formed in a rectangular shape that is long in the left-right direction (X direction). Further, as shown in FIG. 3, the rear frame 18 is disposed on the back side (rear side, Y2 side) of the light guide plate 15. Further, a wall portion 18a extending to the front side (Y1 side) is formed on the outer edge of the rear frame 18.

  The light source unit 16 is attached to the wall portion 18a on the X1 side. Specifically, the surface on the opposite side (X1 side) of the surface of the substrate 16a on which the LED 16b is mounted is bonded to the surface on the X2 side of the wall portion 18a via the adhesive member 19. As a result, the light source unit 16 is attached to the rear frame 18. As a result, heat from the light source unit 16 can be released through the rear frame 18.

  As shown in FIG. 2, the elastic member 4 has a quadrangular prism shape, and is disposed so as to extend along the vertical direction (Z direction) in which the light incident surface 15 c of the light guide plate 15 extends. As shown in FIG. 3, the elastic member 4 is disposed between the mold frame 13 and the light guide plate 15 on the light source unit 16 side (X1 side). Further, the entire elastic member 4 is disposed on the outer side (X1 side) of the side end surface 14a of the optical sheet 14 on the light source unit 16 side. The front side (Y1 side) surface of the elastic member 4 is fixed to the recess 13c of the mold frame 13 by a double-sided tape (not shown). Further, the entire rear side (Y2 side) surface of the elastic member 4 is in contact with the front surface 15 a in the vicinity of the outer edge of the light guide plate 15.

  Here, although most of the light emitted from the LED 16 b is incident on the light incident surface 15 c of the light guide plate 15, a part of the light is not incident on the light guide plate 15, but the front surface 15 a of the light guide plate 15. And the mold frame 13. At this time, if a minute unevenness is formed on the light guide plate 15 or if a gap is formed between the light guide plate 15 and the elastic member 4 due to warpage of the mold frame 13 or the like, Light leaks to the optical sheet 14 side (inside) through various irregularities and gaps. Then, the leaked light is incident on the side end surface 14 a of the optical sheet 14 or is incident on the liquid crystal cell 11 as it is. In this case, on the light source unit 16 side of the liquid crystal cell 11, a region facing the portion between the LEDs 16b becomes dark, while a phenomenon (so-called hot spot) in which the region facing the LED 16b becomes extremely bright occurs. In order to suppress the occurrence of this hot spot, it is necessary to increase the number of LEDs 16b to reduce the distance D (see FIG. 2) between the LEDs 16b, or to increase the distance L between the mold frame 13 and the LEDs 16b.

  Therefore, in the first embodiment, as shown in FIG. 3, the elastic member 4 abuts on the light guide plate 15 in an elastically deformed (compressed) state and has non-translucency that suppresses light transmission. It is configured. Specifically, the elastic member 4 is made of urethane foam. This urethane foam is an elastically deformable foam material (a material having a porous structure) and has a non-light-transmitting property that suppresses light transmission to some extent. When the elastic member 4 is pressed against the light guide plate 15 while being fixed to the mold frame 13 at the time of assembly, the elastic member 4 is in close contact with the front surface 15a of the light guide plate 15, and the thickness direction (Y direction). It is configured to be disposed between the mold frame 13 and the light guide plate 15 while being elastically deformed so as to be compressed. Here, the thickness t1 in the front-rear direction (Y direction) of the elastic member 4 in the elastically deformed state is about 70% or more and about 80% or less of the thickness t0 before elastic deformation. Further, since the voids (holes) of the porous urethane foam are reduced by being compressed (elastically deformed) in the thickness direction, the translucency of the elastic member 4 is more improved than before elastic deformation. It decreases, and the non-translucency becomes higher. Further, the elastic member 4 is disposed so as to fill minute irregularities of the light guide plate 15 by the elastic member 4 being in close contact with the light guide plate 15.

  As a result, in the first embodiment, the elastic member 4 suppresses leakage of light from the LED 16b of the light source unit 16 between the mold frame 13 and the light guide plate 15 to the optical sheet 14 side (inner side). . As a result, even if the distance L from the LED 16b to the opening 13d of the mold frame 13 is reduced while maintaining the number of LEDs 16b, it is possible to suppress the occurrence of hot spots.

  The spacer member 5 has the same quadrangular prism shape as the elastic member 4. The spacer member 5 is arranged so as to extend along the up-down direction (Z direction) in which the light incident surface 15 c of the light guide plate 15 extends. The spacer member 5 is disposed between the light guide plate 15 (reflective sheet 17) and the rear frame 18 on the light source unit 16 side (X1 side), and the front side (Y1 side) of the light guide plate 15. It is arrange | positioned on the opposite side (Y2 side) from the elastic member 4 arrange | positioned. Accordingly, the spacer member 5 is disposed so as to support the light guide plate 15 via the reflection sheet 17. The spacer member 5 is fixed to the rear frame 18 with a double-sided tape (not shown). The spacer member 5 is disposed at a position overlapping the elastic member 4 in the front-rear direction (Y direction).

  The spacer member 5 is made of silicon rubber that does not substantially elastically deform. That is, the spacer member 5 is less likely to be elastically deformed than the elastic member 4 made of urethane foam. Thus, the elastic member 4 is configured to be more elastically deformable than the spacer member 5 when the elastic member 4 is pressed against the light guide plate 15.

  Further, the spacer member 5 is configured to serve as a positioning reference for the light guide plate 15 in the front-rear direction (Y direction). Specifically, when the light guide plate 15 is disposed on the front surface (Y1 side) of the spacer member 5, the center in the front-rear direction (thickness direction) of the light guide plate 15 and the center in the front-rear direction of the LED 16b are approximately. The thickness t2 of the spacer member 5 in the front-rear direction is adjusted so as to match. Thereby, since the mold frame 13, the bezel 12, and the elastic member 4 are not involved in the front-rear direction positioning of the light guide plate 15, the parameters involved in the positioning are the position of the LED 16b in the front-rear direction and the thickness t2 of the spacer member 5 in the front-rear direction. The thickness in the front-rear direction of the reflection sheet 17 and the center position in the front-rear direction of the light guide plate 15 can be limited. In addition, since the thickness of the reflection sheet 17 is sufficiently small, it can be almost ignored. As a result, it is possible to reduce the parameters involved in positioning, and therefore, it is possible to effectively suppress the positional deviation between the light guide plate 15 and the LED 16b in the front-rear direction.

  Further, the elastic member 4 and the spacer member 5 are disposed at a position overlapping the mold frame 13 in the front-rear direction (Y direction) behind the mold frame 13 (Y2 direction). Thereby, the elastic member 4 and the spacer member 5 are arrange | positioned in the position which cannot be visually recognized from the liquid crystal cell 11 side (front side). As a result, it is possible to suppress the occurrence of unevenness due to the elastic member 4 and the spacer member 5 in the display image displayed on the liquid crystal cell 11.

  In the first embodiment, the following effects can be obtained.

  In the first embodiment, as described above, between the light guide plate 15 and the mold frame 13, an elastic member having non-translucency that contacts the light guide plate 15 in an elastically deformed state and suppresses light transmission. 4 is provided. As a result, even if the mold frame 13 is warped or the like due to the elastic member 4 between the light guide plate 15 and the mold frame 13 being in contact with the light guide plate 15 in an elastically deformed state. Since the elastic member 4 can be deformed following the change in the distance between the optical plate 15 and the mold frame 13, it is possible to suppress the generation of a gap between the light guide plate 15 and the elastic member 4. As a result, the light from the light source unit 16 can be prevented from passing through the gap between the light guide plate 15 and the elastic member 4 and entering the liquid crystal cell 11. While becoming bright, it can suppress that it becomes dark in the position away from the light source part 16. FIG. Therefore, it is possible to suppress the occurrence of unevenness (brightness unevenness) in the brightness of the display image displayed on the liquid crystal cell 11.

  In the first embodiment, the elastic member 4 is brought into contact with the front surface 15 a of the light guide plate 15 on the outer side (X1 side) of the side end surface 14 a on the light source unit 16 side (X1 side) of the optical sheet 14. Thereby, the light from the light source unit 16 passes through the gap between the light guide plate 15 and the elastic member 4 as it is by the elastic member 4 that contacts the light guide plate 15 outside the side end surface 14 a of the optical sheet 14. It can suppress that it injects into the side end surface 14a of this as it is. Thereby, due to the light incident on the side end surface 14 a of the optical sheet 14, in the liquid crystal cell 11, the vicinity of the light source unit 16 is brightened, but the darkening at a position away from the light source unit 16 is suppressed. Therefore, unevenness in the brightness of the display image displayed on the liquid crystal cell 11 can be suppressed.

  In the first embodiment, the plurality of LEDs 16b are arranged at substantially equal intervals (interval D) in the vertical direction (Z direction) along the light incident surface 15c (the side end surface on the X1 side), and the elastic member 4 Are arranged so as to extend along the vertical direction in which the light incident surface 15c of the light guide plate 15 extends. Thereby, the elastic member 4 can suppress the occurrence of unevenness in the brightness of the display image displayed on the liquid crystal cell 11 in a wide range in the vertical direction in which the side end surface of the light guide plate 15 extends. Further, since the elastic member 4 suppresses the generation of a gap between the light guide plate 15 and the elastic member 4, the light of each LED 16 b that is a point light source passes through the gap between the light guide plate 15 and the elastic member 4. It can be suppressed that the light passes through the liquid crystal cell 11 as it is. Thereby, on the light source unit 16 side of the liquid crystal cell 11, a region facing the portion between the LEDs 16b becomes dark, while a phenomenon (so-called hot spot) in which the region facing the LED 16b becomes extremely bright is suppressed. Therefore, it is possible to effectively suppress the occurrence of unevenness in the brightness of the display image displayed on the liquid crystal cell 11. As a result, since it is not necessary to provide many LEDs 16b and reduce the interval between the LEDs 16b in order to suppress the occurrence of hot spots, it is possible to suppress an increase in the number of LEDs 16b. Further, since the distance L from the LED 16b to the opening 13d of the mold frame 13 can be reduced while suppressing the occurrence of hot spots without increasing the number of LEDs 16b, the frame-shaped mold frame 13 can be attached to the frame. Thus, the length of the shape portion (the length in the X direction in FIG. 3) can be reduced, and accordingly, the television device 100 can be narrowed (downsized).

  In the first embodiment, since the elastic member 4 is made of a non-translucent foam (urethane foam), the foam containing air is easily elastically deformed and is flexible. The non-translucent elastic member 4 can be elastically deformed so as to be in close contact with the light guide plate 15. Thereby, it can suppress effectively that a clearance gap produces between the light-guide plate 15 and the elastic member 4. FIG.

  In the first embodiment, the spacer member 5 that does not substantially elastically deform (is less likely to be elastically deformed than the elastic member 4) is disposed on the opposite side (rear side, Y2 side) of the light guide plate 15 to the elastic member 4. To do. Thereby, when the elastic member 4 is elastically deformed by pressing the elastic member 4 toward the spacer member 5 side (rear side) against the light guide plate 15, the spacer member 5 is elastically deformed more than the elastic member 4. Can be effectively suppressed. Thereby, the elastic member 4 can be brought into contact with the light guide plate 15 in a state where the elastic member 4 is sufficiently elastically deformed without substantially elastically deforming the spacer member 5.

  In the first embodiment, the recess 13c to which the elastic member 4 is fixed is provided in the mold frame 13, whereby the elastic member 4 can be easily positioned with respect to the mold frame 13 by the recess 13c. A displacement of the elastic member 4 with respect to the frame 13 can also be suppressed.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. In the second embodiment, unlike the first embodiment in which the entire elastic member 4 is disposed outside the side end surface 14 a on the light source unit 16 side of the optical sheet 14, the elastic member 204 includes the optical sheet 14. An example of pressing the side end face 14a and the vicinity thereof will be described. Further, the same configurations as those in the above-described embodiment are denoted by the same reference numerals and are not described.

  As shown in FIG. 4, the recess 213c of the mold frame 213 of the display module 201 of the second embodiment is larger in the left-right direction (X direction) than the recess 13c of the first embodiment (see FIG. 3). Is formed. The mold frame 213 is an example of the “light guide plate support member” in the present invention.

  Further, the non-translucent elastic member 204 is formed larger in the left-right direction (X direction) than the elastic member 4 (see FIG. 3) of the first embodiment so as to correspond to the recess 213c. Further, the portion of the elastic member 204 on the side opposite to the light source unit 16 (X2 side) is in close contact with the optical sheet 14 so as to press the side end surface 14a of the optical sheet 14 and its vicinity. Further, the portion of the elastic member 204 on the light source unit 16 side (X1 side) is in close contact with the front surface 15 a of the light guide plate 15 so as to hold the light guide plate 15.

  In addition, the other structure of 2nd Embodiment is the same as that of the said 1st Embodiment.

  In the second embodiment, the following effects can be obtained.

  In the second embodiment, as described above, between the light guide plate 15 and the mold frame 213, an elastic member having non-translucency that contacts the light guide plate 15 in an elastically deformed state and suppresses light transmission. 204 is provided. As a result, as in the first embodiment, in the liquid crystal cell 11, the vicinity of the light source unit 16 becomes bright, while it can be suppressed from becoming dark at a position away from the light source unit 16. It is possible to suppress the occurrence of unevenness (brightness unevenness) in the brightness of the displayed image.

  Moreover, in 2nd Embodiment, the elastic member 204 is arrange | positioned so that the side end surface 14a by the side of the light source part 16 (X1 side) of the optical sheet 14 and its vicinity may be hold | suppressed. As a result, the position of the optical sheet 14 can be prevented from shifting due to vibration or the like because the elastic member 204 that holds the side end surface 14a of the optical sheet 14 and the vicinity thereof can suppress the position of the optical sheet 14 from shifting. Thus, the light guide plate 15 can be prevented from being damaged.

  The remaining effects of the second embodiment are similar to those of the aforementioned first embodiment.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. In the third embodiment, unlike the first embodiment in which the spacer member 5 is fixed to the rear frame 18 with double-sided tape, the spacer member 305 is provided with engaging portions 305a and 305b that can engage with the rear frame 318. Will be described. The spacer member 305 is an example of the “light guide plate support member” in the present invention. Further, the same configurations as those in the above-described embodiment are denoted by the same reference numerals and are not described.

  As shown in FIGS. 5 and 6, on the rear side (Y2 side) of the spacer member 305 of the display module 301 (see FIG. 7) of the third embodiment, there are four hook-like engaging portions 305a and a hemispherical shape. Engaging portion 305b. The four hook-shaped engagement portions 305a are formed so as to extend rearward from the rear surface (Y2 side surface) of the spacer member 305 and to extend upward (Z1 direction) from the rear end portion. . In addition, the hemispherical engagement portion 305b is provided at the approximate center in the vertical direction (Z direction) of the spacer member 305, and the four hook-shaped engagement portions 305a are located above the engagement portion 305b (Z1). 2 on the side) and two on the lower side (Z2 side). The engaging portions 305a and 305b are formed at substantially equal intervals in the vertical direction.

  The spacer member 305 is made of a resin member that does not substantially elastically deform. That is, the spacer member 305 is less likely to be elastically deformed than the elastic member 4 made of urethane foam (see FIG. 7). Further, since the spacer member 305 is made of a resin member, the hook-shaped engaging portion 305a and the hemispherical engaging portion 305b can be easily formed by integral molding.

  Further, as shown in FIG. 5, the rear frame 318 has four engagement holes 318b with which the four hook-shaped engagement portions 305a are engaged, and an engagement with which the hemispherical engagement portions 305b are engaged. A recess 318c is provided. The engagement hole 318b is formed so as to penetrate the rear frame 318. Further, the engaging recess 318c is recessed in a hemispherical shape. Then, with the hook-shaped engagement portion 305a inserted into the engagement hole 318b, the spacer member 305 is slid upward (Z1 direction), whereby the hook-shaped engagement portion 305a is caught by the rear frame 318. The hemispherical engaging portion 305b fits into the hemispherical engaging portion 305b. As a result, as shown in FIG. 7, the spacer member 305 is configured to be positioned and fixed to the rear frame 318.

  The remaining configuration of the third embodiment is similar to that of the aforementioned first embodiment.

  In the third embodiment, the following effects can be obtained.

  In the third embodiment, as described above, the spacer member 305 is provided with the hook-shaped engagement portion 305a and the hemispherical engagement portion 305b that can be engaged with the rear frame 318. This eliminates the need to separately fix the spacer member 305 and the rear frame 318 with a double-sided tape or the like, thereby reducing the number of components. Also, the spacer member 305 is positioned and fixed to the rear frame 318 by sliding the spacer member 305 upward (Z1 direction). Thereby, since the positioning and fixing of the spacer member 305 can be performed easily, the assembly efficiency of the display module 301 can be improved.

  The remaining effects of the third embodiment are similar to those of the aforementioned first embodiment.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first to third embodiments, the example in which the television device is used as the display device of the present invention has been shown, but the present invention is not limited to this. In the present invention, a display device other than the television device may be used. For example, you may use for general display apparatuses, such as a display apparatus for PC (Personal Computer).

  Moreover, in the said 1st-3rd embodiment, although the elastic member 4 and 204 showed the example comprised from the urethane foam, this invention is not limited to this. In the present invention, the elastic member only needs to be elastically deformable. For example, the elastic member may be made of silicon rubber or foamed polyethylene (EPE) having a low hardness. The elastic member is preferably made of a foam material.

  Moreover, although the spacer member 5 and 305 showed the example comprised from the silicon rubber which does not elastically deform substantially in the said 1st-3rd embodiment, this invention is not limited to this. In the present invention, the spacer member may be a member that is elastically deformed. At this time, the spacer member is preferably a member that is less likely to be elastically deformed than the elastic member.

  In the first to third embodiments, the example in which the spacer member 5 (305) is separately disposed between the light guide plate 15 and the rear frame 18 (318) has been described. However, the present invention is not limited thereto. . In the present invention, the rear frame may be integrally provided with a protrusion that protrudes toward the light guide plate and whose top abuts against the light guide plate. Thereby, since a spacer member is not required, the number of parts can be reduced.

  Moreover, in the said 1st Embodiment, although the example which provided the recessed part 13c by which the elastic member 4 is arrange | positioned in the mold frame 13 was shown, this invention is not limited to this. In the present invention, as in the modification of the first embodiment shown in FIG. 8, the mold frame 413 of the display module 401 need not be provided with a recess. In this case, the elastic member 4 is attached to the flat rear surface of the mold frame 413 via a double-sided tape. The mold frame 413 is an example of the “display support member” in the present invention.

  Moreover, although the light source part 16 showed the example containing several LED16b (point light source) in the said 1st-3rd embodiment, this invention is not limited to this. In the present invention, the light source unit may include a linear light source such as a fluorescent tube instead of the LED.

4,204 Elastic member 5,305 Spacer member (light guide plate support member)
11 Liquid crystal cell (display unit)
13, 213, 413 Mold frame (display support member)
13c Concave part 14 Optical sheet 14a Side end face (Side end face on the light source part side of the optical sheet)
15 Light guide plate 15c Light incident surface 16 Light source part 16b LED (light emitting element)
100 Television device (display device)

Claims (8)

A display unit;
A light source unit;
A light guide plate that includes a light incident surface including a side end surface on which light is incident from the light source unit, and guides light incident on the light incident surface from the light source unit to the display unit;
A display unit support member disposed between the light guide plate and the display unit and supporting the display unit;
A display device, comprising: an elastic member disposed between the light guide plate and the display unit support member and contacting the light guide plate in an elastically deformed state and having non-translucency that suppresses light transmission. . An optical sheet disposed on the opposite side of the elastic member from the light source unit;
The display device according to claim 1, wherein at least a part of the elastic member outside the side end surface on the light source unit side of the optical sheet is in contact with the light guide plate. The light source unit includes a plurality of light emitting elements arranged so as to be aligned along a direction in which a side end surface of the light guide plate extends,
The display device according to claim 1, wherein the elastic member is arranged so as to extend along a direction in which a side end surface of the light guide plate extends.   The display device according to claim 1, wherein the elastic member is made of a non-translucent foam material.   The display device according to claim 1, further comprising a light guide plate support member that is disposed on the opposite side of the light guide plate from the elastic member and is less elastically deformed than the elastic member.   The display device according to claim 5, wherein the light guide plate support member is configured not to be elastically deformed substantially.   The display device according to claim 1, wherein the display unit support member includes a recess in which the elastic member is disposed.   The display device according to claim 2, wherein the elastic member is disposed so as to press a side end surface of the optical sheet on the light source unit side and the vicinity thereof.

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